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Table of Contents
Simple CV
Introduction
Digital created LFO+ENV with CV-Output. No Displays, No Menues, Minimal buttons, much Scopes, much Led-Ring-Rotarys (Planed for LRE-8x2CS), one big UI with complete functions for one LFO+ENV Voice… switching between the UI-Voices is done from the BREAKOUTMODULES…to this later
LFO+ENV are mixed together softwareside, to use only one CV-Output. 8xCV-Outputs (VOICES) are supported > if u are on a VCF+VCA-Setup = 4 Voices on the Analog-Side (4xFilterbank) Copy Paste for LFOs and ENVelopes between the Voices. Copy Paste for a Songa aka Preset aka Bank aka Program(change) Roland MC303 Style Pattern load (next Preset Display) + Preset Morph between Current-Preset and Next-Preset.
Breakoutmodules for each CV-Output, with Depth-rotary, Focusswitch (Pushrotary), 2x Scopes (LFO+ENV) and LFO/ENV-Switch to show on one Display the Mixed Waveform & to switch the Rotary to “ENV” or “LFO” Mode…(there is only space for one Encoder) The Depth-rotary has no Ledring, want to display it as a bar in the scope…
Whole thing will not be based on Midibox CV… i will copy code snippets and so on, but there will be not compatibility to MB-CV (such big Software i cant understand)
FrontPanel
General Design
The panel size is 3U, Eurorack compliant
FrontPanel
PCBs
The Analog Circuits (VCF+VCA) get sandwitch as normal (not90° angeled)
3D View of Sandwitches
make concept
Original Schematics 303
Mods
Mod Sources
Analog Mods
Fill Table with 303 mods
On-Going
1. UI Parts Listing
BRAIN + BREAKOUT
Value | Type | Qty |
---|---|---|
3.5mm Jack | Vertical PCB-Mount | 13 |
Switch | SPDT Vertical PCB-Mount ON-OFF-ON | 1 |
Fill Table
Pots / Knobs
Value | Type | Qty |
---|---|---|
5K | Linear | 2 |
10K | Linear | 6 |
50K | Linear | 6 |
50K | Logarithmic | 6 |
100K | Linear | 2 |
1M | Linear | 3 |
2M? | Linear | 2 |
Knobs | Soft/Plastic/Alu | 31 |
2. Analog Parts Listing
VCA-VCF-Board
Fill Table
3.Footprint Making in KiCAD
- ALPS Pots
- Alpha Pots
- 3,5mm Jack
- Switch
- Momentary Switch
- 7 Segment LED Display
- OLED DIsplay
- Rotary Encoder
have to be done
4. Schematics in KiCAD
have to be done
5.PCB Making In Kicad
PCB Making Order
- BRAIN PCBs
- BREAKOUT PCBs
- FILTER PCBs